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@prologic@twtxt.net Error handling especially in Go is very tricky I think. Even though the idea is simple, it’s fairly hard to actually implement and use in a meaningful way in my opinion. All this error wrapping or the lack of it and checking whether some specific error occurred is a mess. errors.As(…) just doesn’t feel natural. errors.Is(…) only just. I mainly avoided it. Yesterday evening I actually researched a bit about that and found this article on errors with Go 1.13. It shed a little bit of light, but I still have a long way to go, I reckon.

We tried several things but haven’t found the holy grail. Currently, we have a mix of different styles, but nothing feels really right. And having plenty of different approaches also doesn’t help, that’s right. I agree, error messages often end up getting wrapped way too much with useless information. We haven’t found a solution yet. We just noticed that it kind of depends on the exact circumstances, sometimes the caller should add more information, sometimes it’s better if the callee already includes what it was supposed to do.

To experiment and get a feel for yesterday’s research results I tried myself on the combined log parser and how to signal three different errors. I’m not happy with it. Any feedback is highly appreciated. The idea is to let the caller check (not implemented yet) whether a specific error occurred. That means I have to define some dedicated errors upfront (ErrInvalidFormat, ErrInvalidStatusCode, ErrInvalidSentBytes) that can be used in the err == ErrInvalidFormat or probably more correct errors.Is(err, ErrInvalidFormat) check at the caller.

All three errors define separate error categories and are created using errors.New(…). But for the invalid status code and invalid sent bytes cases I want to include more detail, the actual invalid number that is. Since these errors are already predefined, I cannot add this dynamic information to them. So I would need to wrap them à la fmt.Errorf("invalid sent bytes '%s': %w", sentBytes, ErrInvalidSentBytes"). Yet, the ErrInvalidSentBytes is wrapped and can be asserted later on using errors.Is(err, ErrInvalidSentBytes), but the big problem is that the message is repeated. I don’t want that!

Having a Python and Java background, exception hierarchies are a well understood concept I’m trying to use here. While typing this long message it occurs to me that this is probably the issue here. Anyways, I thought, I just create a ParseError type, that can hold a custom message and some causing error (one of the three ErrInvalid* above). The custom message is then returned at Error() and the wrapped cause will be matched in Is(…). I then just return a ParseError{fmt.Sprintf("invalid sent bytes '%s'", sentBytes), ErrInvalidSentBytes}, but that looks super weird.

I probably need to scrap the “parent error” ParseError and make all three “suberrors” three dedicated error types implementing Error() string methods where I create a useful error messages. Then the caller probably could just errors.Is(err, InvalidSentBytesError{}). But creating an instance of the InvalidSentBytesError type only to check for such an error category just does feel wrong to me. However, it might be the way to do this. I don’t know. To be tried. Opinions, anyone? Implementing a whole new type is some effort, that I want to avoid.

Alternatively just one ParseError containing an error kind enumeration for InvalidFormat and friends could be used. Also seen that pattern before. But that would then require the much more verbose var parseError ParseError; if errors.As(err, &parseError) && parseError.Kind == InvalidSentBytes { … } or something like that. Far from elegant in my eyes.

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Scientific Field Prefixes
⌘ Read more

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**RT by @mind_booster: [¼]
✈️Novo passo na expansão ilegal do Aeroporto da Portela prejudicará severamente milhares de cidadãos.

⚠️Foi iniciado processo de consulta pública sobre portaria que passará a permitir voos noturnos sem limites.

(Continua 👇)**
[¼]

✈️Novo passo na expansão ilegal do Aeroporto da Portela prejudicará severamente milhares de cidadãos.

⚠️Foi iniciado processo de consulta pública sobre portaria que passará a permitir voos noturnos sem limites.

(Continua 👇)

![](https://nitter.net/pic/me … ⌘ Read more

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Ignite Realtime Blog: REST API Openfire plugin 1.9.1 released!
Woopsie doodle! It turns out that a rather annoying bug was introduced in version 1.9.0 of the REST API plugin for Openfire, that we released earlier today!

To avoid unnecessary issues, we’ve decided to follow up with an immediate new release that addresses this issue. … ⌘ Read more

Not sure if this helps in any way, but I had problems with this when I ran gnusocial, i then disabled http 1.0 or 1.1 in apache, that stopped 99.9% of them.

“Com a apresentação do Simplex na área ambiental, o Governo prepara-se para retroceder décadas na política ambiental, fazendo tábua rasa dos valores fundamentais que a política ambiental e o instrumento da avaliação de impacte ambiental visam proteger.” 1/7
“Com a apresentação do Simplex na área ambiental, o Governo prepara-se para retroceder décadas na política ambiental, fazendo tábua rasa dos valores fundamentais que a política ambiental e o instrumento da avaliação de impacte ambiental visam proteger.” … ⌘ Read more

Ignite Realtime Blog: REST API Openfire plugin 1.9.0 released!
We have released version 1.9.0 of the Openfire REST API plugin! This version adds functionality and provides some bug fixes that relates to multi-user chat rooms.

The updated plugin should become available for download in your Openfire admin console in the course of the next few hours. Alternatively, you can download the plugin directly, from [the plugin’s archive page](https://www.igniterealtime.org/projects/openfire/pl … ⌘ Read more

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R to @mind_booster: So? “Anything above 1.5C will see a world plagued by intense summer heat, extreme drought, devastating floods, reduced crop yields, rapidly melting ice sheets and surging sea levels. A rise of 2C and above will seriously threaten the stability of global society, McGuire argues.”
So? “Anything above 1.5C will see a world plagued by intense summer heat, extreme drought, devastating floods, reduced crop yields, rapidly melting ice sheets and surging sea levels. A rise of 2C and above will s … ⌘ Read more

“to limit that rise to 1.5C […] global carbon emissions will have to be reduced by 45% by 2030.
[…]
Instead, we are on course for close to a 14% rise in emissions by that date – which will almost certainly see us shatter the 1.5C guardrail in less than a decade.”
“to limit that rise to 1.5C […] global carbon emissions will have to be reduced by 45% by 2030.

[…]

Instead, we are on course for close to a 14% rise in emissions by that date – which will almost certainly see us shatter the 1.5C guardrai … ⌘ Read more

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[47°09′13″S, 126°43′15″W] Reading: 1.22 Sv

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@niplav@niplav.github.io if he’s willing to be even more nerdy he could use https://lojban.org/publications/cll/cll_v1.1_xhtml-section-chunks/section-evidentials.html and possibly color-code them in some less important color than red

[47°09′50″S, 126°43′43″W] Reading: 1.40 Sv

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Gajim: Gajim 1.4.7
Gajim 1.4.7 brings performance improvements, better file previews, and many bug fixes. Thanks for all your reports!

Multiple issues with Gajim’s file preview have been fixed. If you want to disable file previews entirely, there is now a setting in Gajim’s preferences.

For people with many contacts in their contact list, this release will bring a significant performance improvement 🚀

Furthermore, notifications on Windows should not appear in the taskbar anymore.

Linux, Alternative OS, & Retro Computing News - July 23, 2022
Wordperfect for UNIX comes to Linux, Xbox Live 1.0 recreated, & Lego Atari 2600 ⌘ Read more

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Ignite Realtime Blog: REST API Openfire plugin 1.8.3 released!
We recently release version 1.8.3 of the Openfire REST API plugin. This version extends the MUC search capability to include the natural name of the MUC (instead of just the name). It also updates a number of library dependencies.

The updated plugin should be available for download in your Openfire admin console already. Alternatively, you can download the plugin directly, from [the plugin’s archive page](https://www.ign … ⌘ Read more

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[47°09′11″S, 126°43′43″W] Reading: 1.77 Sv

[47°09′58″S, 126°43′43″W] Reading: 1.69000 PPM

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I’m trying to switch from Konversation to irssi. Let’s see how that goes. Any irssiers out there who can recommend specific settings or scripts? I already got myself trackbar.pl and nickcolor.pl as super-essentials. Also trying window_switcher.pl. Somehow my custom binds for Ctrl+1/2/3/etc. to switch to window 1/2/3/etc. doesn’t do anything: { key = "^1"; id = "change_window"; data = "1"; } (I cannot use the default with Alt as this is handled by my window manager). Currently, I’m just cycling with Ctrl+N/P. Other things to solve in the near future:

• better, more colorful and compact theme (just removed clock from statusbar so far)
  
• getting bell/urgency hints working on arriving messages
  
• nicer tabs in status bar, maybe even just channel names and no indexes
  
• decluster status bar with user and channel modes (I never cared about those in the last decade)

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Erlang Solutions: Updates to the MIM Inbox in version 5.1

When a messaging client starts, it typically presents the user with:

• an inbox
  
• a summary of chats (in chronological order)
  
• unread messages in their conversation
  
• a snippet of the most recent message in the conversation
  
• information on if a conversation is muted (and if so how long a conversation is muted for)
  
• other information that users may find useful on their welcome screen
  

Mongoos … ⌘ Read more

❤️ 🎶: Carry On (From “신의”), Pt. 1. - Original Television Soundtrack by ALi

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@prologic@twtxt.net: 1. I use classic twtxt client written in Python from console, I like simplicity; 2. Thanks for the feedback about my website! It’s better viewed with old 800x600 monitors, haha

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Finally started Stranger Things and watched episodes 1 to 5 so far, I quite like it.

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[47°09′21″S, 126°43′22″W] Reading: 1.56000 PPM

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Gajim: Gajim 1.4.6
Gajim 1.4.6 fixes some bugs with the status icon and notifications. Emoji short code detection has been improved.

Several issues have been fixed in this release.

• Improved detection of emoji short codes
  
• Tray icon withlibappindicator has been fixed
  
• Groups are now preserved when changing a contact’s name
  
• Windows: Notifications shouldn’t appear in the taskbar anymore
  

Have a look at the [chan … ⌘ Read more

Ignite Realtime Blog: Push Notification Openfire plugin 0.9.1 released
The Ignite Realtime community is happy to announce the immediate availability of a bugfix release for the Push Notification plugin for Openfire!

This plugin adds support for sending push notifications to client software, as described in XEP-0357: “Push Notifications”.

[This update](https://www.igniterealtime.org/projects/openfire/plugins/0.9.1/pushnotificatio … ⌘ Read more

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**RT by @mind_booster: My latest @locusmag column is “The Swerve,” a short essay about the shape that hope takes when happy endings are off the table:

https://locusmag.com/2022/07/cory-doctorow-the-swerve/ 1/**
My latest @locusmag column is “The Swerve,” a short essay about the shape that hope takes when happy endings are off the table:

locusmag.com/2022/07/cory-do… 1/

![](https://nitter.net/pic/media%2FFW6b … ⌘ Read more

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Last chance for a 1-on-1 video chat with Lunduke
The 1-on-1 perk is being retired after tomorrow! ⌘ Read more

JD.com extends access to Tencent’s WeChat for three years with US$220 million in stock
JD.com is keeping its preferential access to WeChat’s 1.29 billion users, extending a partnership with Tencent that gives it a short cut on the platform. ⌘ Read more

[47°09′48″S, 126°43′06″W] Reading: 1.61 Sv

In 1 word: how 25 people describe Hong Kong, a city close to their hearts
As Hong Kong marks the 25th anniversary of its return to Chinese rule, we ask people with close ties to the city to describe it in one word. ⌘ Read more

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It’s a wrap for China’s Tianwen-1 Mars mission, but rover and orbiter still ready to work
China’s space agency marks completion of Tianwen-1 mission with new photos of red planet volcano and polar cap. ⌘ Read more

China’s first lady Peng Liyuan expected to join Xi Jinping on two-day visit to Hong Kong this week for July 1 celebrations
She is likely to visit the Xiqu Centre for Chinese opera after arriving on Thursday, says government source. ⌘ Read more

Hong Kong could issue No 1 typhoon warning signal on Wednesday night, forecaster says, ahead of expected visit by Chinese President Xi Jinping
Hong Kong Observatory warns strong winds and showers are possible with tropical depression heading towards west of Hong Kong and Guangdong province. ⌘ Read more

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Amid heatwaves and floods, time is running out for rich nations to fulfil climate pledges and avert catastrophe
The current pledges of financial and policy support are nowhere near enough to meet the goal of limiting global warming to 1.5 degrees. Instead of protecting carbon-emitting industries, the world needs economic diversification and green jobs for a just, sustainable transition. ⌘ Read more

More than 10 journalists denied permission to cover Hong Kong handover anniversary events due to security reasons, reporters’ group says
Post photographer among those denied permission to cover celebratory events on July 1. Other rejected applicants include photographer from Information Services Department and journalists from Reuters and Agence France-Press. ⌘ Read more

Quarter of world’s population at risk from once-in-a-century floods
Around 1.8 billion people face a “significant” risk, including hundreds of millions in the world’s two most populous countries – India and China. ⌘ Read more

Coronavirus: Hong Kong could cut hotel quarantine to 5 days, with another 2 in home isolation, incoming health minister says
Professor Lo Chung-mau, who will be new secretary for health on July 1, reveals ‘5+2’ option among possibilities being considered to help shorten quarantine ⌘ Read more

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Russian missiles hit crowded shopping centre in Ukraine, Zelensky says
More than 1,000 people were in the shopping centre at the time of the attack, according to President Volodymyr Zelensky. ;It is impossible to even imagine the number of victims’, he said. ⌘ Read more

JD.com founder Richard Liu cashes out nearly US$1 billion from e-commerce giant after retreat from top job
Liu has sold Nasdaq-listed JD.com stock and Hong Kong-listed JD Health shares worth a combined US$988 million since April, according to filings. ⌘ Read more

China’s May industrial profits kept tumbling, raising calls for more government support
China’s gross domestic product (GDP) may grow by about 1 per cent in the second quarter, making it ‘arguably difficult’ to reach Beijing’s full-year target, according to a central bank adviser. ⌘ Read more

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‘We have nothing’ say survivors of deadly earthquake now facing disease outbreak
There is a desperate need for clean water – cholera outbreaks in the aftermath are of particular and serious concern – after at least 1,000 people were killed, 2,000 injured and 10,000 homes destroyed in the devastating earthquake. ⌘ Read more

Coronavirus Hong Kong: hospitals experience uptick in Covid-related admissions as city logs over 1,900 cases
Hong Kong records 1,917 cases, comprising 1,799 local and 118 imported infections, and no additional deaths. ⌘ Read more

This 1.63 million-year-old fossil may have been the first human (hominin) to inhabit China
Scientists used teeth analysis to show that a Homo erectus fossil nicknamed, Lantian Man, likely lived in northwest China and may represent the first known hominin to live there. ⌘ Read more

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How’s the China-India economic relationship changed 2 years on from the deadly Galwan Valley border clash?
China’s exports to India grew to US$27.1 billion in the first quarter of 2022, but India is concerned by its ballooning trade deficit with its neighbour amid strained ties two years after the deadly Galwan Valley clash. ⌘ Read more

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Hong Kong police arrest 1,800 people, aged 11 to 90, in first four weeks of cross-border crime crackdown
Officers seize HK$100 million worth of illegal drugs and illicit goods in operation Thunderbolt 2022. ⌘ Read more

Coronavirus: Beijing making contingency plans for Hong Kong government swearing-in ceremony on July 1 after 2 top city officials catch Covid-19
Cases spark speculation on whether a state leader such as President Xi Jinping will attend ceremony on July 1, the 25th anniversary of city’s return to Chinese rule. ⌘ Read more

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UAE sells US$3 billion in high-quality debt amid recession fears
The oil-rich Persian Gulf nation on Thursday sold US$1.75 billion in 10-year bonds and US$1.25 billion in notes due in 2052. ⌘ Read more

Ignite Realtime Blog: REST API Openfire plugin 1.8.1 released!
Earlier today, version 1.8.1 of the Openfire REST API plugin was released. This version removes the need to authenticate for status endpoints, adds new endpoints for bulk modifications of affiliations on MUC rooms, as well as a healthy number of other bugfixes.

The updated plugin should become available for download in your Openfire admin console in the course of the next few hours. Alternatively, you can download the pl … ⌘ Read more

Coronavirus: Hong Kong logs over 1,000 cases for ninth day as Macau shuts gaming hubs, restricts eateries to combat surge in infections
Health officials in Hong Kong confirm 1,650 Covid-19 cases, including 128 imported infections, and one additional death ⌘ Read more